CN113150536A - Composition containing polybutyrolactam or derivatives thereof, and preparation method and application thereof - Google Patents
Composition containing polybutyrolactam or derivatives thereof, and preparation method and application thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
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Abstract
The invention discloses a polyester composition containing polybutyrolactam or derivatives thereof, a preparation method and application thereof. The polyester composition comprises the following components in parts by weight: 40-80 parts of polyester, 5-50 parts of polyamide, 0-60 parts of filler and 0-10 parts of processing aid. According to the composition, a proper amount of polybutyrolactam is added into the aliphatic polyester or the aliphatic/aromatic polyester with low aromatic ring content, so that the composition has good toughness, high modulus and high rigidity, the defects of the existing aliphatic polyester are overcome, the prepared composition can meet the processing modes of injection molding, plastic suction and the like, and the application of the aliphatic polyester, particularly the butanediol succinate is widened.
Description
Technical Field
The invention relates to the field of biodegradable compositions, in particular to a composition containing polybutyrolactam or derivatives thereof, a preparation method and application thereof.
Background
With the development of economy and the pace of life of people, the use of disposable consumer goods such as disposable tableware has been increasing, and various disposable blister-grade packaging materials have also been rapidly developed. Most of the disposable tableware and packing boxes on the market are made of traditional non-degradable materials through foaming or plastic-sucking molding. The material is known to damage human health in use, and the discarded material seriously affects the living environment of people and causes serious environmental pollution problem.
Aliphatic polyester (or aliphatic/aromatic polyester with low aromatic ring content) is an environment-friendly resin which can be completely decomposed in the nature, cannot cause any damage to the human body in the using process, cannot cause any influence on the environment after being discarded, is considered to be completely degradable by all countries in the world at present, is concerned by all researchers and industrial industries, and becomes one of the focuses of the current degradable material research.
A typical representative of aliphatic polyesters is poly (butylene succinate) (PBS). PBS has excellent toughness and tensile strength, but the application of PBS in the injection molding and plastic uptake fields is severely limited due to the lower modulus of PBS. Currently, there are few reports of materials that can achieve high modulus PBS for enhancing PBS stiffness. Therefore, increasing the modulus and stiffness of the PBS while maintaining its toughness has become a key to the widespread use of PBS in injection molded or blister materials.
Disclosure of Invention
The object of the present invention is to overcome the disadvantages of the prior art and to provide a composition comprising polybutyrolactam or derivatives thereof. The composition can enable the aliphatic polyester or the aliphatic/aromatic polyester with low aromatic ring content to have good toughness, high modulus and high rigidity, and is suitable for processing modes such as injection molding, plastic uptake and the like.
It is another object of the present invention to provide a method for preparing the composition comprising polybutyrolactam or derivatives thereof.
It is another object of the present invention to provide the use of said composition comprising polybutyrolactam or derivatives thereof.
The above object of the present invention is achieved by the following technical solutions:
a polyester composition comprising polybutyrolactam or a derivative thereof, comprising the following components, calculated in parts by weight:
(i)40 to 80 parts of a polyester comprising dicarboxylic acid units and diol units,
the dicarboxylic acid unit comprises the following units in terms of the molar content of the unit in the dicarboxylic acid unit:
a1) from 0 to 20 mol% of units derived from at least one aromatic dicarboxylic acid,
a2)80 to 100 mol% of units derived from at least one saturated aliphatic dicarboxylic acid,
a3)0 to 5 mol% of units derived from at least one unsaturated aliphatic dicarboxylic acid;
the diol units comprise the following units in terms of their molar content relative to the diol units:
b1)95 to 100 mol% of units derived from at least one saturated aliphatic diol;
b2)0 to 5 mole% of units derived from at least one unsaturated aliphatic diol;
(ii) 5-50 parts of polyamide, wherein the polyamide comprises the following units in terms of molar content of the units in the polyamide:
c1)50-95 mol% of units derived from gamma-aminobutyric acid or butyrolactam;
c2)5-50 mol% of units derived from amino acids or lactams having 6-12 carbon atoms;
(iii) 0-60 parts of a filler;
(iv) 0-10 parts of a processing aid.
The polybutyrolactam (PA4, commonly called nylon 4) has good crystallinity, heat resistance, toughness, rebound resilience and hygroscopicity, is not only derived from biomass raw materials, but also can be degraded in seawater, silt and living bodies, is helpful for reducing the environmental pollution caused by non-degradable wastes, and is a unique polyamide material with high commercial value. However, pure PA4 has a melting point higher than the decomposition temperature and is difficult to use, and needs to be modified to improve thermal stability. The inventor finds that proper amount of 6-12 carbon atoms of amide units are added into PA4 to be matched with the PA4, and the low modulus problem of aliphatic polyester or aliphatic/aromatic polyester with low aromatic ring content can be improved by utilizing the good rigidity of a hydrogen bond structure of PA4, and the problem of difficult processing and utilization of pure PA4 can be solved.
As described above, the present invention solves the problem of low modulus of Aliphatic Polyesters (AP) or aliphatic/aromatic polyesters (AAPE) having a low aromatic ring content. The Aliphatic Polyester (AP) means a polyester containing a dicarboxylic acid component and a diol component. Aliphatic/aromatic polyester (AAPE) refers to a polyester containing a dicarboxylic acid component and a diol component. Therefore, it is preferable that the molar content of the a1) aromatic dicarboxylic acid-derived unit in the polyester component is 0 to 10 mol%.
Preferably, in a1), the aromatic dicarboxylic acid derived units are phthalic acid dicarboxylic acid and/or furandicarboxylic acid derived units.
More preferably, the phthalic acid dicarboxylic acid and/or furandicarboxylic acid derived units, more preferably terephthalic acid, isophthalic acid, 2, 5-furandicarboxylic acid, 2, 4-furandicarboxylic acid, 2, 3-furandicarboxylic acid, 3, 4-furandicarboxylic acid, and esters, salts, or mixtures thereof.
Preferably, a1) contains 1-99 mol% of units derived from terephthalic acid or its ester and salt and 99-1 mol% of units derived from furan dicarboxylic acid or its ester and salt.
Preferably, in a2), the saturated aliphatic dicarboxylic acid is selected from saturated aliphatic dicarboxylic acids containing 2 to 24 carbon atoms. More preferably, the saturated aliphatic dicarboxylic acid is selected from saturated aliphatic dicarboxylic acids having 4 to 13 carbon atoms. More preferably, the saturated aliphatic dicarboxylic acid is selected from saturated aliphatic dicarboxylic acids having 4 to 11 carbon atoms.
The units derived from the saturated aliphatic dicarboxylic acid may be the above-mentioned saturated aliphatic dicarboxylic acids, or alkyl esters of the above-mentioned saturated aliphatic dicarboxylic acids, the number of carbon atoms of which is in the range of C1 to C24, more preferably C1 to C4.
The saturated aliphatic dicarboxylic acid may be chosen in particular from succinic acid, 2-ethylsuccinic acid, glutaric acid, 2-methylglutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid or brassylic acid.
More preferably, said a2) preferably contains at least 50%, more preferably more than 60%, more preferably more than 65% of the total amount of a2), selected from succinic acid, adipic acid, azelaic acid, sebacic acid, brassylic acid or their alkyl ester mixture.
More preferably, a2) preferably contains succinic acid.
More preferably, in the a2), the succinic acid derived unit accounts for 90-100 mol% of the molar content of the dicarboxylic acid unit.
Preferably, in b1), the content of units derived from saturated aliphatic diol is 97-100 mol%; the content of the unsaturated aliphatic diol-derived unit is 0 to 3 mol%.
Preferably, the saturated aliphatic diol is selected from the group consisting of 1, 2-ethanediol, 1, 2-propanediol, 1, 3-propanediol, 1, 4-butanediol, 1, 5-pentanediol, 1, 6-hexanediol, 1, 7-heptanediol, 1, 8-octanediol, 1, 9-nonanediol, 1, 10-decanediol, 1, 11-undecanediol, 1, 12-dodecanediol, 1, 13-tridecanediol, 1, 4-cyclohexanedimethanol, neopentyl glycol, 2-methyl-1, 3-propanediol, dianhydrosorbitol, dianidol, cyclohexanediol, cyclohexandiol, a dialkylene diol or a polyalkylene glycol having a molecular weight of 100 to 4000. The polyalkylene glycol is, for example, polyethylene glycol, polypropylene glycol or a mixture thereof.
More preferably, the saturated aliphatic diols comprise at least 50 mole% of one or more diols selected from the group consisting of 1, 2-ethanediol, 1, 3-propanediol, 1, 4-butanediol. More preferably, the diol units are all 1, 4-butanediol derived units.
More preferably, the unsaturated aliphatic diol is preferably selected from cis-2-butene-1, 4-diol, trans-2-butene-1, 4-diol, 2-butyne-1, 4-diol, cis-2-pentene-1, 5-diol, trans-2-pentene-1, 5-diol, 2-pentyne-1, 5-diol, cis-2-hexene-1, 6-diol, trans-2-hexene-1, 6-diol, 2-hexyne-1, 6-diol, cis-3-hexene-1, 6-diol, trans-3-hexene-1, 6-diol or 3-hexyne-1, 6-diol.
More preferably, the polyester is an aliphatic polyester, preferably selected from poly (1, 4-butanediol succinate), poly (1, 4-butanediol adipate), poly (1, 4-butanediol azelate), poly (1, 4-butanediol sebacate), poly (1, 4-butanediol adipate-co-1, 4-butanediol succinate), poly (1, 4-butanediol azelate-co-1, 4-butanediol succinate), poly (1, 4-butanediol sebacate-co-1, 4-butanediol succinate) or poly (1, 4-butanediol succinate-co-1, 4-butanediol adipate-1, 4-butanediol). Most preferred is poly (1, 4-butylene succinate).
In the preparation of the polyester, it is also possible to add one or more molecules having a plurality of functional groups in an amount of 0.1 to 3 mol% relative to the total number of moles of the dicarboxylic acid component in order to obtain a branched product. These molecules may be glycerol, pentaerythritol, trimethylolpropane, citric acid, dipentaerythritol, acid triglycerides, polyglycerol, and the like.
Preferably, the gamma-aminobutyric acid or butyrolactam derived units constitute 60 to 80 mol% of the molar content of the polyamide.
In the units derived from amino acids or lactams having 6 to 12 carbon atoms, the lactam is selected from caprolactam, enantholactam, caprylolactam, nonolactam, caprylolactam, undecanolactam or laurolactam.
More preferably, the lactam with 6 to 12 carbon atoms is selected from one or more of caprolactam, undecanolactam or laurolactam.
In the present invention, the polyamide can be obtained by an anionic ring-opening polymerization method described in, for example, patent documents CN111154097A, CN109851778A, etc., and can also be obtained in academic documents such as:
Kawasaki,N.；Yamano,N.；Nakayama,A.,Synthesis,properties,and biodegradability of three-branched copolyamide(4/6).J.Appl.Polym.Sci.2020,137(39):49165.
for example, the method described in CN109851778A, including potassium tert-butoxide activation, carbon dioxide initiation, addition of paraffin oil and sodium dodecyl sulfate may be used.
The method specifically comprises the following steps:
(1) potassium tert-butoxide activation
6-15 parts (by mass) of lactam are put into a reaction kettle which is pre-dried, deaerated and filled with nitrogen. Closing the nitrogen, starting the vacuum state, heating and stirring to 60-100 ℃, keeping the temperature for 0.5-8 hours, and controlling the rotating speed at 400 r/min. And (3) closing the vacuum device, introducing nitrogen, continuously adding 0.5-6 parts (by mass) of potassium tert-butoxide into the reaction kettle, closing the nitrogen after adding, continuously vacuumizing, and preserving heat at 60-100 ℃ for 2-6 hours to prepare the activating solution.
(2) Initiation by carbon dioxide
And closing the vacuum device of the activating solution, taking out half of the solution in the reaction kettle, pouring the half of the solution into another flask, heating to 15-50 ℃, introducing carbon dioxide for 5-30 minutes, wherein the flow rate is 2-3L/min, and the stirring speed is 180 r/min.
(3) Adding paraffin oil and sodium dodecyl sulfate
Then, paraffin oil which is heated to 70-120 ℃ in a vacuumizing condition in advance and is kept warm for 1-6 hours by 30-50 parts by mass, 1 part by mass of sodium dodecyl sulfate and the rest half solution in the reaction kettle are sequentially added, after the temperature is heated to 30-70 ℃, the stirring speed is 400r/min, and the closed reaction is continued for 18-72 hours.
(4) Adding n-hexane
Adding 20-45 parts (by mass) of n-hexane, stirring for 3-48 hours, and performing suction filtration to obtain the polymer. And washing the polymer with acetone, washing with water, and then placing in a vacuum oven for drying to obtain a white solid, namely the polyamide.
More preferably, the polyamide is PA 4/6.
More preferably, in said PA4/6, the molar ratio of butyrolactam units to caprolactam is 60: 40.
In the present invention, the filler may be a filler commonly used in the art, and is preferably selected from kaolin, barite, clay, talc, carbonate of calcium or magnesium, iron, lead, aluminum hydroxide, diatomaceous earth, aluminum sulfate, barium sulfate, silica, mica, titanium dioxide, wollastonite, starch, chitin, chitosan, alginate, or protein. Such as gelatin, zein, casein, collagen, gelatin, natural rubber, abietic acid and its derivatives, etc.
More preferably, the filler is preferably calcium carbonate, starch or talc. The addition of these types of fillers provides a better improvement in the tear propagation resistance of the film when the composition is prepared into a film.
In the present invention, the starch may be flour, natural starch, hydrolyzed starch, modified starch, gelatinized starch, plasticized starch, thermoplastic starch, composite starch-containing biological filler, or a mixture thereof. More preferably, the starch is preferably a native starch such as potato, corn, tapioca or pea starch.
It is more advantageous that starches such as potato starch, corn starch and the like can be easily denatured and have a higher initial molecular weight. These starches may be present as such or in chemically modified form, for example in the form of starch esters having a degree of substitution of from 0.2 to 2.5, starch hydroxypropionates, or starches modified with fatty chains. Reference herein to modified starch is to the teachings contained in patents EP-0118240 and EP-0327505, which are understood to mean starch treated in such a way that it does not have so-called "polarized crosses" (Maltese cross) in polarized light under an optical microscope and so-called "ghosts" (ghosts) under a phase contrast microscope. Advantageously, the starch is modified by means of an extrusion process at a temperature of 110 to 250 ℃, preferably 130 to 180 ℃, preferably at a pressure of 0.1 to 7MPa, preferably 0.3-6MPa, preferably to provide a specific energy of more than 0.1kWh/kg during the extrusion.
The amount of the calcium carbonate is preferably 5-25 parts, and preferably 10-20 parts. The calcium carbonate generally has an average particle size of 0.5 to 10 microns, preferably 1 to 5 microns, more preferably 1 to 2.5 microns. More preferably calcium carbonate from Omya.
The preferable amount of the talc is 3 to 15 parts, and 5 to 10 parts. The average particle size of the talc is usually 0.5 to 10 μm, preferably 1 to 8 μm, and more preferably 1 to 3 μm. More preferred is carbon talc available from mondo minerals.
In the present invention, the processing aid is a common processing aid used in plastic technology. Common processing aids include stabilizers, nucleating agents, lubricants, mold release agents, plasticizers, surfactants, antistatic agents, UV absorbers, UV stabilizers, antifog agents, or dyes.
More specifically, the processing aid may be selected from calcium stearate, citric acid esters (in particular acetyl tributyl citrate), glycerol esters (e.g. triacetyl glycerol), glycol derivatives, polysorbates, palmitates, laurates, erucamide, stearamide, behenamide, beeswax esters of beeswax and the like.
More preferably, the processing aid is used in an amount of 0.1 to 2 parts.
According to the preparation method of the polyester composition containing the polybutyrolactam or the derivatives thereof, the polyester composition containing the polybutyrolactam or the derivatives thereof is prepared by uniformly mixing the components and then adopting extrusion granulation.
Use of the polyester composition comprising polybutyrolactam or derivatives thereof for the preparation of a degradable film.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a composition containing polybutyrolactam or derivatives thereof. According to the composition, a proper amount of polybutyrolactam is added into the aliphatic polyester or the aliphatic/aromatic polyester with low aromatic ring content, so that the composition has good toughness, high modulus and high rigidity, the defects of the existing aliphatic polyester are overcome, the prepared composition can meet the processing modes of injection molding, plastic suction and the like, and the application of the aliphatic polyester, particularly the butanediol succinate is widened.
Detailed Description
Unless otherwise specified, the raw materials, reagents and solvents used in the present invention were all purchased commercially without any treatment. The present invention is described in further detail with reference to the following examples, but the embodiments of the present invention are not limited to the examples, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention. In the present specification, "part" and "%" represent "part by mass" and "% by mass", respectively, unless otherwise specified.
The test method comprises the following steps:
the intrinsic viscosity test of the polyamide is carried out in 98% concentrated sulfuric acid at (25. + -. 0.01) ℃ with reference to the standard GB/T12006.1-1989 using an Ubbelohde viscometer.
Melt index MFR, tested with reference to the standard GB/T3682.1-2018.
And the mechanical property test adopts an injection standard spline test according to GB/T1040-.
(i) Polyester:
with PBS as a representative of aliphatic polyesters,
poly (butylene succinate) (PBS): GS-Pla FZ71-PD (MFR 4.5g/10min (190 ℃,2.16kg), available from Mitsubishi Chemical Corporation.
(ii) PA4/6 Polyamide, made by itself
Reference is made to the procedure described in CN109851778A for the synthesis of PA4/6, wherein the molar ratio of butyrolactams to caprolactam is 60: 40. The specific synthesis method comprises the following steps:
(1) potassium tert-butoxide activation
Adding 3kg of mixed solution of butyrolactam and caprolactam with a molar ratio of 60:40 into a 10L reaction kettle filled with nitrogen, closing the nitrogen, vacuumizing, heating to 80 ℃, and preserving heat for 3 hours; and (3) closing the vacuum, introducing nitrogen, adding 300g of potassium tert-butoxide under the protection of the nitrogen, closing the nitrogen again, vacuumizing, and preserving the heat at 80 ℃ for 2 hours to obtain the activation solution.
(2) Initiation by carbon dioxide
And (3) cooling the activating solution to 40 ℃, introducing dry carbon dioxide gas, and introducing for 15 minutes.
(3) Adding paraffin oil and sodium dodecyl sulfate
10kg of paraffin oil and 400g of sodium dodecyl sulfate are added, and the temperature is raised to 50 ℃ for reaction for 36 hours.
(4) Adding n-hexane
Adding 12kg of n-hexane, stirring for more than 8h, filtering to obtain a product, washing with acetone for three times, washing with water for three times, and placing in a vacuum oven at 60 ℃ for drying for 24h to finally obtain a milky solid, wherein the milky solid has the melting point of 151 ℃ and the intrinsic viscosity of 0.65dL/g, and the PA4/6 is a milky solid.
PLA: commercially available from NatureWorks, USA under the trade designation Ingeo 3052D, MFR (14g/10min, 210 ℃,2.16kg)
(iii) Filler material
Calcium carbonate, Jiangxi Cheng Haiyuan new materials, Inc., specification CC-1250;
talcum powder, Jiangxi Cheng Haiyuan New Material Co., Ltd, specification CC-1000.
(iv) Processing aid
Stearoyl citrate, Shandong West Tang Biotech, Inc., Specification NP-10;
joncryl ADR 4468, BASF corporation, acrylic and styrene copolymers containing epoxy functionality.
Examples and comparative examples were prepared according to the formulations of table 1, and the test results of the relevant examples and comparative examples are shown in table 1.
TABLE 1
As can be seen from the examples and comparative examples, since comparative example 1 uses only PBS, the tensile strength and bending strength are low; comparative example 2 PLA, although having a certain improvement in performance, was not desirable as an additive to the modified PBS; comparative example 3 used too much filler and the elongation at break was too low.
Claims (10)
1. A polyester composition comprising polybutyrolactam or a derivative thereof, characterized by comprising the following components in parts by weight:
(i)40 to 80 parts of a polyester comprising dicarboxylic acid units and diol units,
the dicarboxylic acid unit comprises the following units in terms of the molar content of the unit in the dicarboxylic acid unit:
a1) from 0 to 20 mol% of units derived from at least one aromatic dicarboxylic acid,
a2)80 to 100 mol% of units derived from at least one saturated aliphatic dicarboxylic acid,
a3)0 to 5 mol% of units derived from at least one unsaturated aliphatic dicarboxylic acid;
the diol units comprise the following units in terms of their molar content relative to the diol units:
b1)95 to 100 mol% of units derived from at least one saturated aliphatic diol;
b2)0 to 5 mole% of units derived from at least one unsaturated aliphatic diol;
(ii) 5-50 parts of polyamide, wherein the polyamide comprises the following units in terms of molar content of the units in the polyamide:
c1)50-95 mol% of units derived from gamma-aminobutyric acid or butyrolactam;
c2)5-50 mol% of units derived from amino acids or lactams having 6-12 carbon atoms;
(iii) 0-60 parts of a filler;
(iv) 0-10 parts of a processing aid.
2. The polyester composition comprising polybutyrolactam or derivatives thereof according to claim 1, wherein in a1), said aromatic dicarboxylic acid derived units are phthalic acid dicarboxylic acid and/or furandicarboxylic acid derived units.
3. The polyester composition comprising polybutyrolactam or derivative thereof according to claim 1 or 2, wherein a1) comprises 1 to 99 mol% of units derived from terephthalic acid or ester or salt thereof and 99 to 1 mol% of units derived from furandicarboxylic acid or ester or salt thereof.
4. The polyester composition comprising polybutyrolactam or derivative thereof according to claim 1, wherein in a2), said saturated aliphatic dicarboxylic acid is selected from saturated aliphatic dicarboxylic acids having 2 to 24 carbon atoms.
5. The polyester composition comprising polybutyrolactam or a derivative thereof according to claim 1 or 4, wherein said saturated aliphatic dicarboxylic acid in a2) comprises succinic acid.
6. The polyester composition comprising polybutyrolactam or derivative thereof according to claim 1, wherein all of said diol units are units derived from 1, 4-butanediol.
7. The polyester composition comprising polybutyrolactam or derivatives thereof according to claim 1, wherein said gamma-aminobutyric acid or butyrolactam derived units represent 60 to 80 mol% of the molar content of the polyamide.
8. Polyester composition comprising polybutyrolactam or derivatives thereof, according to claim 1, characterized in that said lactam having 6 to 12 carbon atoms is selected from one or several of caprolactam, undecanolactam or dodecanolactam.
9. The method for preparing a polyester composition comprising polybutyrolactam or its derivative according to any one of claims 1 to 8, wherein the polyester composition comprising polybutyrolactam or its derivative is prepared by extrusion granulation after mixing the components uniformly.
10. Use of a polyester composition comprising polybutyrolactam or a derivative thereof according to any one of claims 1 to 8, for the preparation of a degradable film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011585107.9A CN113150536A (en) | 2020-12-28 | 2020-12-28 | Composition containing polybutyrolactam or derivatives thereof, and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021039A1 (en) * | 2022-07-27 | 2024-02-01 | 华东理工大学 | Polybutyrolactam-based degradable multi-layer composite film, preparation method, and use |
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Application publication date: 20210723 |